21463327 has 2 divisors, whose sum is σ = 21463328. Its totient is φ = 21463326.

The previous prime is 21463289. The next prime is 21463339. The reversal of 21463327 is 72336412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21463327 - 2¹⁵ = 21430559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21463295 and 21463304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21463427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10731663 + 10731664.

It is an arithmetic number, because the mean of its divisors is an integer number (10731664).

Almost surely, 2^21463327 is an apocalyptic number.

21463327 is a deficient number, since it is larger than the sum of its proper divisors (1).

21463327 is an equidigital number, since it uses as much as digits as its factorization.

21463327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 28.

The square root of 21463327 is about 4632.8530086762. The cubic root of 21463327 is about 277.9066979824.

Adding to 21463327 its reverse (72336412), we get a palindrome (93799739).

The spelling of 21463327 in words is "twenty-one million, four hundred sixty-three thousand, three hundred twenty-seven".